Archive image from page 59 of American spiders and their spinning. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits CUbiodiversity1121211-9742 Year: 1889 ( CHAPTER IV. CONSTRUCTION OF AN ORBWEB. I. A DESCRIPTION of the remaining part of the orb will be better reached by a detailed account of the manner in which an orbweb is constructed. There are some variations in methods among different species, Laymg might be expected from the varieties of webs, but the process p is substantially th
Archive image from page 59 of American spiders and their spinning. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits CUbiodiversity1121211-9742 Year: 1889 ( CHAPTER IV. CONSTRUCTION OF AN ORBWEB. I. A DESCRIPTION of the remaining part of the orb will be better reached by a detailed account of the manner in which an orbweb is constructed. There are some variations in methods among different species, Laymg might be expected from the varieties of webs, but the process p is substantially the same in all species observed. The first step of Snare secure a suitable framework upon which to hang the orb, which is known as the Foundation or Frame, and the several parts composing it, as Foundation Lines. The spider has two methods of accomplishing this. First, the frame lines are laid down ' by liand.' The spider crawls along the objects over and upon which she purposes to spin her snare, drawing after her a A Frame j-g which at various â p. points she fastens to the surface in this wise: the spinnerets, which are grouped in a little rosette at the Fig. 68. Epeira moving with dragline and anchorage. gnd of the abdomen, have a large number of minute hollow tubes or spinning spools upon their tips, out of which issues a liquid silk of which all spinningwork is formed. The spinnerets and their hundreds of spools are movable at the will of the spider. When they are held closely together, the numerous threads emitted / by them blend into one. When they are held apart, on the contrary, , various separate threads are formed. As the spider runs along she stops here and there, expands her spinning organs, and at the same time tlirusts them downward and touches the surface. The clustered threads tlms issued stick to the surface and at once harden. Then tlie spider closes together the spinnerets, as one would close the points of his fingers against his thumb, lifts them, moves
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